Verification device for operation logic and switching tripping and closing time-delay fixed value of spare power automatic switching device

Abstract

The invention discloses a verification circuit and device for operation logic and switching tripping and a closing time-delay fixed value of a spare power automatic switching device. The verification device comprises a relay control loop and a device operation panel. The relay control loop consists of an inlet wire I switch control branch circuit, an inlet wire II switch control branch circuit, an inner bridge switch control branch circuit, a timing logic function and indication branch circuit, and a timer and no-voltage relay circuit. The device is connected with all operation contact points of a spare power automatic switching device by the device operation panel; and all switching positions and post-closing positions are simulated. Because of a bus voltage determination function, the verification function of the spare power automatic switching operation logic and tripping and closing delay time of all switches can be completed automatically based on determination of the relay control loop only by drawing and closing the field bus voltage air switch; the verification time of the spare power automatic switching device is shortened; the check and repair labor force is saved; and the time of the spare power automatic switching device put into operation is accelerated.

Description

technical field [0001] The invention relates to an inspection device, in particular to an inspection device for automatic switch-on action logic and switch trip and closing delay setting value. Background technique [0002] In the power system, the reliability of power supply is required to be higher and higher. Some important 110kV and below medium and low voltage substations are often equipped with backup power. reliability of power supply. Since there are many secondary devices involved in the standby automatic switching device, the correctness of its action logic is related to whether the backup power supply can be put into operation correctly, and the setting value of the tripping and closing time must meet the time coordination principle of the upper and lower standby automatic switching devices, so its The correctness of the action logic and switch trip and close delay setting is particularly important, and both need to be checked regularly. [0003] The tradition...

AI Technical Summary

Problems solved by technology

[0003] The traditional inspection method of the standby automatic switching device often uses the cooperation of multiple people to short-circuit the position of the relevant circuit breaker to test the correctness of the logic exit, which leads to a longer inspection time of the standby automatic switching device and prolongs the operation time of the standby automatic switching device , and cannot effectively guarantee the correctness of the action logic of the standby automatic switching device

Under the existing technical conditions, although the state sequence function module of the relay protection tester can be used to test the function of the automatic switch-on device, it is still necessary to manually set multiple state parameters of the relay protection tester before the test can be started, which is inefficient lower

Under the existing technology, it may be possible to use the existing automatic switching device tester for inspection, but none of them has the inspection function of the switch tripping delay setting value, and it still needs to be assisted by other testers to complete the test.

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